Re: ps-print-buffer-with-faces doesn't use selected frame's background

[Vinicius Jose Latorre]

Richard Stallman wrote:
>     I made some tests and it is not possible to use frame-parameter in the 
>     ps-default-fg and ps-default-bg initialization, because, during Emacs 
>     initilization, ps-print is loaded before the frame parameters are set.
>
> 1. Why is ps-print loaded before the frame parameters are set?
> In what case is that so?

Well, I don't know why, but when the initialization code for 
ps-default-bg and ps-default-fg include frame-parameter, the result is 
always:

   ps-default-bg   "#ffffff" (white)
   ps-default-fg   "#222222" (gray98)

It doesn't matter if the background-color frame parameter is set to 
"white", "DarkSlateGray", "black" or any other color in the 
initial-frame-alist variable, the initialization value is always as above.


> 2. It would be possible to avoid computing the defaults for
> ps-default-fg and ps-default-bg until a command is given to print
> something.  Would that solve the problem?

Well, it could solve the problem.

If the variables have a value (let's say, 'frame-parameter), the value 
of them is calculated when any ps-print command is activated. And it's 
used frame-parameter function to get the color value.

Could I implement this now in Emacs 22 or wait until after release?